feat(core): initial implementation of syncing

packages/opencode/src/session/index.ts

@@ -9,9 +9,10 @@ import { Config } from "../config/config"
 import { Flag } from "../flag/flag"
 import { Installation } from "../installation"
 
-import { Database, NotFoundError, eq, and, or, gte, isNull, desc, like, inArray, lt } from "../storage/db"
+import { Database, NotFoundError, eq, and, gte, isNull, desc, like, inArray, lt } from "../storage/db"
+import { SyncEvent } from "../sync"
 import type { SQL } from "../storage/db"
-import { SessionTable, MessageTable, PartTable } from "./session.sql"
+import { SessionTable } from "./session.sql"
 import { ProjectTable } from "../project/project.sql"
 import { Storage } from "@/storage/storage"
 import { Log } from "../util/log"
@@ -182,24 +183,44 @@ export namespace Session {
   export type GlobalInfo = z.output<typeof GlobalInfo>
 
   export const Event = {
-    Created: BusEvent.define(
-      "session.created",
-      z.object({
+    Created: SyncEvent.define({
+      type: "session.created",
+      version: "v1",
+      aggregate: "sessionID",
+      schema: z.object({
+        sessionID: z.string(),
         info: Info,
       }),
-    ),
-    Updated: BusEvent.define(
-      "session.updated",
-      z.object({
+    }),
+    Shared: SyncEvent.define({
+      type: "session.shared",
+      version: "v1",
+      aggregate: "sessionID",
+      schema: z.object({
+        sessionID: z.string(),
+        url: z.string().optional(),
+      }),
+    }),
+    Updated: SyncEvent.define({
+      type: "session.updated",
+      version: "v1",
+      aggregate: "sessionID",
+      schema: z.object({
+        sessionID: z.string(),
+        info: Info.partial().extend({
+          time: Info.shape.time.partial().optional(),
+        }),
+      }),
+    }),
+    Deleted: SyncEvent.define({
+      type: "session.deleted",
+      version: "v1",
+      aggregate: "sessionID",
+      schema: z.object({
+        sessionID: z.string(),
         info: Info,
       }),
-    ),
-    Deleted: BusEvent.define(
-      "session.deleted",
-      z.object({
-        info: Info,
-      }),
-    ),
+    }),
     Diff: BusEvent.define(
       "session.diff",
       z.object({
@@ -280,18 +301,8 @@ export namespace Session {
   )
 
   export const touch = fn(SessionID.zod, async (sessionID) => {
-    const now = Date.now()
-    Database.use((db) => {
-      const row = db
-        .update(SessionTable)
-        .set({ time_updated: now })
-        .where(eq(SessionTable.id, sessionID))
-        .returning()
-        .get()
-      if (!row) throw new NotFoundError({ message: `Session not found: ${sessionID}` })
-      const info = fromRow(row)
-      Database.effect(() => Bus.publish(Event.Updated, { info }))
-    })
+    const time = Date.now()
+    SyncEvent.run(Event.Updated, { sessionID, info: { time: { updated: time } } })
   })
 
   export async function createNext(input: {
@@ -318,22 +329,18 @@ export namespace Session {
       },
     }
     log.info("created", result)
-    Database.use((db) => {
-      db.insert(SessionTable).values(toRow(result)).run()
-      Database.effect(() =>
-        Bus.publish(Event.Created, {
-          info: result,
-        }),
-      )
-    })
+
+    SyncEvent.run(Event.Created, { sessionID: result.id, info: result })
+
     const cfg = await Config.get()
     if (!result.parentID && (Flag.OPENCODE_AUTO_SHARE || cfg.share === "auto"))
       share(result.id).catch(() => {
         // Silently ignore sharing errors during session creation
       })
-    Bus.publish(Event.Updated, {
-      info: result,
-    })
+    // Bus.publish(Event.Updated, {
+    //   id: result.id,
+    //   info: result,
+    // })
     return result
   }
 
@@ -357,12 +364,9 @@ export namespace Session {
     }
     const { ShareNext } = await import("@/share/share-next")
     const share = await ShareNext.create(id)
-    Database.use((db) => {
-      const row = db.update(SessionTable).set({ share_url: share.url }).where(eq(SessionTable.id, id)).returning().get()
-      if (!row) throw new NotFoundError({ message: `Session not found: ${id}` })
-      const info = fromRow(row)
-      Database.effect(() => Bus.publish(Event.Updated, { info }))
-    })
+
+    SyncEvent.run(Event.Shared, { sessionID: id, url: share.url })
+
     return share
   })
 
@@ -370,12 +374,8 @@ export namespace Session {
     // Use ShareNext to remove the share (same as share function uses ShareNext to create)
     const { ShareNext } = await import("@/share/share-next")
     await ShareNext.remove(id)
-    Database.use((db) => {
-      const row = db.update(SessionTable).set({ share_url: null }).where(eq(SessionTable.id, id)).returning().get()
-      if (!row) throw new NotFoundError({ message: `Session not found: ${id}` })
-      const info = fromRow(row)
-      Database.effect(() => Bus.publish(Event.Updated, { info }))
-    })
+
+    SyncEvent.run(Event.Shared, { sessionID: id, url: undefined })
   })
 
   export const setTitle = fn(
@@ -384,18 +384,7 @@ export namespace Session {
       title: z.string(),
     }),
     async (input) => {
-      return Database.use((db) => {
-        const row = db
-          .update(SessionTable)
-          .set({ title: input.title })
-          .where(eq(SessionTable.id, input.sessionID))
-          .returning()
-          .get()
-        if (!row) throw new NotFoundError({ message: `Session not found: ${input.sessionID}` })
-        const info = fromRow(row)
-        Database.effect(() => Bus.publish(Event.Updated, { info }))
-        return info
-      })
+      SyncEvent.run(Event.Updated, { sessionID: input.sessionID, info: { title: input.title } })
     },
   )
 
@@ -405,18 +394,7 @@ export namespace Session {
       time: z.number().optional(),
     }),
     async (input) => {
-      return Database.use((db) => {
-        const row = db
-          .update(SessionTable)
-          .set({ time_archived: input.time })
-          .where(eq(SessionTable.id, input.sessionID))
-          .returning()
-          .get()
-        if (!row) throw new NotFoundError({ message: `Session not found: ${input.sessionID}` })
-        const info = fromRow(row)
-        Database.effect(() => Bus.publish(Event.Updated, { info }))
-        return info
-      })
+      SyncEvent.run(Event.Updated, { sessionID: input.sessionID, info: { time: { archived: input.time } } })
     },
   )
 
@@ -426,17 +404,9 @@ export namespace Session {
       permission: Permission.Ruleset,
     }),
     async (input) => {
-      return Database.use((db) => {
-        const row = db
-          .update(SessionTable)
-          .set({ permission: input.permission, time_updated: Date.now() })
-          .where(eq(SessionTable.id, input.sessionID))
-          .returning()
-          .get()
-        if (!row) throw new NotFoundError({ message: `Session not found: ${input.sessionID}` })
-        const info = fromRow(row)
-        Database.effect(() => Bus.publish(Event.Updated, { info }))
-        return info
+      SyncEvent.run(Event.Updated, {
+        sessionID: input.sessionID,
+        info: { permission: input.permission, time: { updated: Date.now() } },
       })
     },
   )
@@ -448,42 +418,24 @@ export namespace Session {
       summary: Info.shape.summary,
     }),
     async (input) => {
-      return Database.use((db) => {
-        const row = db
-          .update(SessionTable)
-          .set({
-            revert: input.revert ?? null,
-            summary_additions: input.summary?.additions,
-            summary_deletions: input.summary?.deletions,
-            summary_files: input.summary?.files,
-            time_updated: Date.now(),
-          })
-          .where(eq(SessionTable.id, input.sessionID))
-          .returning()
-          .get()
-        if (!row) throw new NotFoundError({ message: `Session not found: ${input.sessionID}` })
-        const info = fromRow(row)
-        Database.effect(() => Bus.publish(Event.Updated, { info }))
-        return info
+      SyncEvent.run(Event.Updated, {
+        sessionID: input.sessionID,
+        info: {
+          summary: input.summary,
+          time: { updated: Date.now() },
+          revert: input.revert,
+        },
       })
     },
   )
 
   export const clearRevert = fn(SessionID.zod, async (sessionID) => {
-    return Database.use((db) => {
-      const row = db
-        .update(SessionTable)
-        .set({
-          revert: null,
-          time_updated: Date.now(),
-        })
-        .where(eq(SessionTable.id, sessionID))
-        .returning()
-        .get()
-      if (!row) throw new NotFoundError({ message: `Session not found: ${sessionID}` })
-      const info = fromRow(row)
-      Database.effect(() => Bus.publish(Event.Updated, { info }))
-      return info
+    SyncEvent.run(Event.Updated, {
+      sessionID,
+      info: {
+        time: { updated: Date.now() },
+        revert: undefined,
+      },
     })
   })
 
@@ -493,22 +445,12 @@ export namespace Session {
       summary: Info.shape.summary,
     }),
     async (input) => {
-      return Database.use((db) => {
-        const row = db
-          .update(SessionTable)
-          .set({
-            summary_additions: input.summary?.additions,
-            summary_deletions: input.summary?.deletions,
-            summary_files: input.summary?.files,
-            time_updated: Date.now(),
-          })
-          .where(eq(SessionTable.id, input.sessionID))
-          .returning()
-          .get()
-        if (!row) throw new NotFoundError({ message: `Session not found: ${input.sessionID}` })
-        const info = fromRow(row)
-        Database.effect(() => Bus.publish(Event.Updated, { info }))
-        return info
+      SyncEvent.run(Event.Updated, {
+        sessionID: input.sessionID,
+        info: {
+          time: { updated: Date.now() },
+          summary: input.summary,
+        },
       })
     },
   )
@@ -662,46 +604,25 @@ export namespace Session {
   })
 
   export const remove = fn(SessionID.zod, async (sessionID) => {
-    const project = Instance.project
     try {
       const session = await get(sessionID)
       for (const child of await children(sessionID)) {
         await remove(child.id)
       }
       await unshare(sessionID).catch(() => {})
-      // CASCADE delete handles messages and parts automatically
-      Database.use((db) => {
-        db.delete(SessionTable).where(eq(SessionTable.id, sessionID)).run()
-        Database.effect(() =>
-          Bus.publish(Event.Deleted, {
-            info: session,
-          }),
-        )
-      })
+
+      SyncEvent.run(Event.Deleted, { sessionID, info: session })
     } catch (e) {
       log.error(e)
     }
   })
 
   export const updateMessage = fn(MessageV2.Info, async (msg) => {
-    const time_created = msg.time.created
-    const { id, sessionID, ...data } = msg
-    Database.use((db) => {
-      db.insert(MessageTable)
-        .values({
-          id,
-          session_id: sessionID,
-          time_created,
-          data,
-        })
-        .onConflictDoUpdate({ target: MessageTable.id, set: { data } })
-        .run()
-      Database.effect(() =>
-        Bus.publish(MessageV2.Event.Updated, {
-          info: msg,
-        }),
-      )
+    SyncEvent.run(MessageV2.Event.Updated, {
+      sessionID: msg.sessionID,
+      info: msg,
     })
+
     return msg
   })
 
@@ -711,17 +632,9 @@ export namespace Session {
       messageID: MessageID.zod,
     }),
     async (input) => {
-      // CASCADE delete handles parts automatically
-      Database.use((db) => {
-        db.delete(MessageTable)
-          .where(and(eq(MessageTable.id, input.messageID), eq(MessageTable.session_id, input.sessionID)))
-          .run()
-        Database.effect(() =>
-          Bus.publish(MessageV2.Event.Removed, {
-            sessionID: input.sessionID,
-            messageID: input.messageID,
-          }),
-        )
+      SyncEvent.run(MessageV2.Event.Removed, {
+        sessionID: input.sessionID,
+        messageID: input.messageID,
       })
       return input.messageID
     },
@@ -734,17 +647,10 @@ export namespace Session {
       partID: PartID.zod,
     }),
     async (input) => {
-      Database.use((db) => {
-        db.delete(PartTable)
-          .where(and(eq(PartTable.id, input.partID), eq(PartTable.session_id, input.sessionID)))
-          .run()
-        Database.effect(() =>
-          Bus.publish(MessageV2.Event.PartRemoved, {
-            sessionID: input.sessionID,
-            messageID: input.messageID,
-            partID: input.partID,
-          }),
-        )
+      SyncEvent.run(MessageV2.Event.PartRemoved, {
+        sessionID: input.sessionID,
+        messageID: input.messageID,
+        partID: input.partID,
       })
       return input.partID
     },
@@ -753,24 +659,10 @@ export namespace Session {
   const UpdatePartInput = MessageV2.Part
 
   export const updatePart = fn(UpdatePartInput, async (part) => {
-    const { id, messageID, sessionID, ...data } = part
-    const time = Date.now()
-    Database.use((db) => {
-      db.insert(PartTable)
-        .values({
-          id,
-          message_id: messageID,
-          session_id: sessionID,
-          time_created: time,
-          data,
-        })
-        .onConflictDoUpdate({ target: PartTable.id, set: { data } })
-        .run()
-      Database.effect(() =>
-        Bus.publish(MessageV2.Event.PartUpdated, {
-          part: structuredClone(part),
-        }),
-      )
+    SyncEvent.run(MessageV2.Event.PartUpdated, {
+      sessionID: part.sessionID,
+      part: structuredClone(part),
+      time: Date.now(),
     })
     return part
   })

packages/opencode/src/session/message-v2.ts

@@ -6,8 +6,9 @@ import { APICallError, convertToModelMessages, LoadAPIKeyError, type ModelMessag
 import { LSP } from "../lsp"
 import { Snapshot } from "@/snapshot"
 import { fn } from "@/util/fn"
-import { Database, NotFoundError, and, desc, eq, inArray, lt, or } from "@/storage/db"
-import { MessageTable, PartTable, SessionTable } from "./session.sql"
+import { Database, eq, desc, inArray } from "@/storage/db"
+import { SyncEvent } from "../sync"
+import { MessageTable, PartTable } from "./session.sql"
 import { ProviderTransform } from "@/provider/transform"
 import { STATUS_CODES } from "http"
 import { Storage } from "@/storage/storage"
@@ -449,25 +450,34 @@ export namespace MessageV2 {
   export type Info = z.infer<typeof Info>
 
   export const Event = {
-    Updated: BusEvent.define(
-      "message.updated",
-      z.object({
+    Updated: SyncEvent.define({
+      type: "message.updated",
+      version: "v1",
+      aggregate: "sessionID",
+      schema: z.object({
+        sessionID: z.string(),
         info: Info,
       }),
-    ),
-    Removed: BusEvent.define(
-      "message.removed",
-      z.object({
+    }),
+    Removed: SyncEvent.define({
+      type: "message.removed",
+      version: "v1",
+      aggregate: "sessionID",
+      schema: z.object({
         sessionID: SessionID.zod,
         messageID: MessageID.zod,
       }),
-    ),
-    PartUpdated: BusEvent.define(
-      "message.part.updated",
-      z.object({
+    }),
+    PartUpdated: SyncEvent.define({
+      type: "message.part.updated",
+      version: "v1",
+      aggregate: "sessionID",
+      schema: z.object({
+        sessionID: z.string(),
         part: Part,
+        time: z.number(),
       }),
-    ),
+    }),
     PartDelta: BusEvent.define(
       "message.part.delta",
       z.object({
@@ -478,14 +488,16 @@ export namespace MessageV2 {
         delta: z.string(),
       }),
     ),
-    PartRemoved: BusEvent.define(
-      "message.part.removed",
-      z.object({
+    PartRemoved: SyncEvent.define({
+      type: "message.part.removed",
+      version: "v1",
+      aggregate: "sessionID",
+      schema: z.object({
         sessionID: SessionID.zod,
         messageID: MessageID.zod,
         partID: PartID.zod,
       }),
-    ),
+    }),
   }
 
   export const WithParts = z.object({

packages/opencode/src/session/projectors.ts

@@ -0,0 +1,135 @@
+import { NotFoundError, eq, and } from "../storage/db"
+import { SyncEvent } from "@/sync"
+import { Session } from "./index"
+import { MessageV2 } from "./message-v2"
+import { SessionTable, MessageTable, PartTable } from "./session.sql"
+import { ProjectTable } from "../project/project.sql"
+
+export type DeepPartial<T> = {
+  [K in keyof T]?: T[K] extends object ? DeepPartial<T[K]> : T[K]
+}
+
+function grab<T extends object, K1 extends keyof T, X>(
+  obj: T,
+  field1: K1,
+  cb?: (val: NonNullable<T[K1]>) => X,
+): X | undefined {
+  if (obj == undefined || !(field1 in obj)) return undefined
+
+  const val = obj[field1]
+  if (val && typeof val === "object" && cb) {
+    return cb(val)
+  }
+  return (val === undefined ? null : val) as X | undefined
+}
+
+export function toPartialRow(info: DeepPartial<Session.Info>) {
+  const obj = {
+    id: grab(info, "id"),
+    project_id: grab(info, "projectID"),
+    workspace_id: grab(info, "workspaceID"),
+    parent_id: grab(info, "parentID"),
+    slug: grab(info, "slug"),
+    directory: grab(info, "directory"),
+    title: grab(info, "title"),
+    version: grab(info, "version"),
+    share_url: grab(info, "share", (v) => grab(v, "url")),
+    summary_additions: grab(info, "summary", (v) => grab(v, "additions")),
+    summary_deletions: grab(info, "summary", (v) => grab(v, "deletions")),
+    summary_files: grab(info, "summary", (v) => grab(v, "files")),
+    summary_diffs: grab(info, "summary", (v) => grab(v, "diffs")),
+    revert: grab(info, "revert"),
+    permission: grab(info, "permission"),
+    time_created: grab(info, "time", (v) => grab(v, "created")),
+    time_updated: grab(info, "time", (v) => grab(v, "updated")),
+    time_compacting: grab(info, "time", (v) => grab(v, "compacting")),
+    time_archived: grab(info, "time", (v) => grab(v, "archived")),
+  }
+
+  return Object.fromEntries(Object.entries(obj).filter(([_, val]) => val !== undefined))
+}
+
+export default [
+  SyncEvent.project(Session.Event.Created, (db, data) => {
+    const existing = db
+      .select({ id: ProjectTable.id })
+      .from(ProjectTable)
+      .where(eq(ProjectTable.id, data.info.projectID))
+      .get()
+    if (!existing) {
+      // Create a (temporary) project to make this work. In the future
+      // we should separate sessions and projects
+      db.insert(ProjectTable)
+        .values({
+          id: data.info.projectID,
+          worktree: data.info.directory,
+          sandboxes: [],
+        })
+        .run()
+    }
+
+    db.insert(SessionTable).values(Session.toRow(data.info)).run()
+  }),
+
+  SyncEvent.project(Session.Event.Updated, (db, data) => {
+    const info = data.info
+    const row = db.update(SessionTable).set(toPartialRow(info)).where(eq(SessionTable.id, data.sessionID)).returning().get()
+    if (!row) throw new NotFoundError({ message: `Session not found: ${data.sessionID}` })
+  }),
+
+  SyncEvent.project(Session.Event.Shared, (db, data) => {
+    const row = db
+      .update(SessionTable)
+      .set({ share_url: data.url })
+      .where(eq(SessionTable.id, data.sessionID))
+      .returning()
+      .get()
+    if (!row) throw new NotFoundError({ message: `Session not found: ${data.sessionID}` })
+  }),
+
+  SyncEvent.project(Session.Event.Deleted, (db, data) => {
+    db.delete(SessionTable).where(eq(SessionTable.id, data.sessionID)).run()
+  }),
+
+  SyncEvent.project(MessageV2.Event.Updated, (db, data) => {
+    const time_created = data.info.time.created
+    const { id, sessionID, ...rest } = data.info
+
+    db.insert(MessageTable)
+      .values({
+        id,
+        session_id: sessionID,
+        time_created,
+        data: rest,
+      })
+      .onConflictDoUpdate({ target: MessageTable.id, set: { data: rest } })
+      .run()
+  }),
+
+  SyncEvent.project(MessageV2.Event.Removed, (db, data) => {
+    db.delete(MessageTable)
+      .where(and(eq(MessageTable.id, data.messageID), eq(MessageTable.session_id, data.sessionID)))
+      .run()
+  }),
+
+  SyncEvent.project(MessageV2.Event.PartRemoved, (db, data) => {
+    db.delete(PartTable)
+      .where(and(eq(PartTable.id, data.partID), eq(PartTable.session_id, data.sessionID)))
+      .run()
+  }),
+
+  SyncEvent.project(MessageV2.Event.PartUpdated, (db, data) => {
+    const { id, messageID, sessionID, ...rest } = data.part
+
+    db.insert(PartTable)
+      .values({
+        id,
+        message_id: messageID,
+        session_id: sessionID,
+        time_created: data.time,
+        data: rest,
+      })
+      .onConflictDoUpdate({ target: PartTable.id, set: { data: rest } })
+      .run()
+  }),
+]

packages/opencode/src/session/revert.ts

@@ -4,8 +4,7 @@ import { Snapshot } from "../snapshot"
 import { MessageV2 } from "./message-v2"
 import { Session } from "."
 import { Log } from "../util/log"
-import { Database, eq } from "../storage/db"
-import { MessageTable, PartTable } from "./session.sql"
+import { SyncEvent } from "../sync"
 import { Storage } from "@/storage/storage"
 import { Bus } from "../bus"
 import { SessionPrompt } from "./prompt"
@@ -113,8 +112,10 @@ export namespace SessionRevert {
       remove.push(msg)
     }
     for (const msg of remove) {
-      Database.use((db) => db.delete(MessageTable).where(eq(MessageTable.id, msg.info.id)).run())
-      await Bus.publish(MessageV2.Event.Removed, { sessionID: sessionID, messageID: msg.info.id })
+      SyncEvent.run(MessageV2.Event.Removed, {
+        sessionID: sessionID,
+        messageID: msg.info.id,
+      })
     }
     if (session.revert.partID && target) {
       const partID = session.revert.partID
@@ -124,8 +125,7 @@ export namespace SessionRevert {
         const removeParts = target.parts.slice(removeStart)
         target.parts = preserveParts
         for (const part of removeParts) {
-          Database.use((db) => db.delete(PartTable).where(eq(PartTable.id, part.id)).run())
-          await Bus.publish(MessageV2.Event.PartRemoved, {
+          SyncEvent.run(MessageV2.Event.PartRemoved, {
             sessionID: sessionID,
             messageID: target.info.id,
             partID: part.id,